Abstract
Left ventricular outflow tract obstruction in children is classified according to the site of the obstruction into a supra-aortic type, valvular type, and subaortic type (subaortic stenosis). Subaortic stenosis, in turn, is classified into two major subtypes, i.e., a discrete type, which accounts for most cases and a tunnel type, and one minor subtype, the accessory mitral tissue type, which is rare. Systolic anterior motion (SAM) is a phenomenon that is commonly observed in hypertrophic cardiomyopathy. We report a rare case of subaortic stenosis associated with SAM, which was caused by cleft anterior mitral leaflet and an accessory papillary muscle. Surgical treatment was successful, and there were no complications.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Salley RK (1991) Left ventricular outflow tract obstruction in children. Cardiol Clin 9:381–396
Brown JW, Ruzmetov M, Vijay P, Rodefeld MD, Turrentine MW (2003) Surgery for aortic stenosis in children: A 40-year experience. Ann Thorac Surg 76:1398–1411
Prifti E, Frati G, Bonacchi M, Vanini V, Chauvaud S (2001) Accessory mitral valve tissue causing left ventricular outflow tract obstruction: Case reports and literature review. J Heart Valve Dis 10: 774–778
Garret HE, Spray TL (1990) Accessory mitral valve tissue: An increasingly recognized cause of left ventricular outflow tract obstruction. J Cardiovasc Surg 31:225–230
Wigle ED, Clark CE, Silver MD (1971) Pathophysiological considerations in muscular subaortic stenosis. In: Wolstenholme GEW, O’Connor M (eds) Hypertrophic obstructive cardiomyopathy, Ciba Foundation Study Group No. 37. J&A Churchill, London, pp 63–76
Henry WL, Clark CE, Griffith JM, Epstein SE (1975) Mechanism of left ventricular outflow obstruction in patients with obstructive asymmetric septal hypertrophy (idiopathic hypertrophic subaortic stenosis). Am J Cardiol 35:337–345
Nakagawa M, Sano N, Nobe S, Ichinose M, Yonemochi H, Saikawa T (2004) Patients with mild hypertensive heart disease and left ventricular outflow tract obstruction: treatment with angiotensin II antagonists. Heart Vessels 19:248–251
Espino DM, Shepherd DET, Buchan KG (2007) Effect of mitral valve geometry on valve competence. Heart Vessels 22:109–115
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Iwata, Y., Imai, Y., Shin’oka, T. et al. Subaortic stenosis associated with systolic anterior motion. Heart Vessels 23, 436–439 (2008). https://doi.org/10.1007/s00380-008-1078-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00380-008-1078-1